Paper-bag machine.



PATENTEDJU'NE 19, 1906.

G. HARTMAN.

PAPER BAG MACHINE. APPLIUATIQN FILED JULIZB, 1905.

4 SHEBTSSHEET 1.

PATENTED JUNE 19, 1906.

G. HARTM-AN. PAPER- BAG MACHINE. APPLICATION FILED JULYZB, 1905.

4 SHEETS-SHEET 2.

PATENTED JUNE 19, 1906.

HARTMAN.

BAG MACHINE.

GI PAPER APPLIGATIO PATENTED JUNE 19, 1906.

G. HARTMAN.

' PAPER BAG MACHINE.

APPLIOATION FILED JULYZB, 1905.

4 SHEETS-SHEET 4.

51' l newton W1 blooms is an automatic means for sion upon the paper as it is fed from the roll EDWARD WENNING, OF CINCINNATI, OHIO.

PAPER-BAG MACHINE:-

o. same;

To all whom it mlay conccrm.

Be it known that I, GEORGE HARTMAN, a

citizen of the United States of America, and a resident of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new anduseful Improvements in Paper-Bag Machines, of which thefollowing is a specifica My invention relates to a machine for making satchel-bottom paper ba s, and its object eeping the tenuniform, a means for pre aring the surface of thepa er for receivin t e glue, and printmg mec anism rnserte 1n the dev1ce for 'prlntin the ba s prior to the time at'which the fol ing of t e bottom is completed and means for presenting a dry surface to the .bags s they leave the rintin -rolls, and an impr ed mechanism or fol ing over the longitudinal flaps of the bottom. These objects are attained by the means illustrated in the accompanying drawings, in which like parts are indicated by similar reference-letters wherever they occur throughout the va rious views.

'Figure 1 is a diagrammatical-side elevation of the operative parts of a machine embodying my invention, the gearing for conveying the motion throughout the various shafts being omitted, since it is of ordinary construction and its inclusion would serve to complicate the views. Fig. 2 is a plan view, upon anenlarged scale, of a strip of paper folded and notched at intervals. Fig. 3 is a plan view of the paper blank, showing the successive steps in forming the bag. Fig. 4. is a detail horizontal sectional view ta en upon line X X of Fig. 1. verse sectional view taken upon line .5 5 of Fig. 4. Fig. 6 is a detail view of one of the fingers for folding the pa er strip into a tube.

Fig. 7 is a view, party in e evation and artly in section, of therolls for severin the blank from thetube. Fig. 8 is a side e evation of the roll'shown in Fig. 7. 9 is a detail side elevation of the arm for feeding the blank from the creasing-rolls to the printing-rolls. Fig. 10 is-an end view of the arms shown in Fig. 9. Fi 10 i'sa detail end view of the fingers, one 0 which is shown in Fig. 6. Figs. 11 and 12 are respectively side ele- Specification of Letters Patent. Application filed July 28. 1905. serial No. 271,576.

Fig. 5 is a trans-' vations and end views of the cylinder against GEORGE HARTMAN, or CINCINNATI, OHIQASSIGNOR or TWO-FIFTHS To Patented June It),

end of the paper blank. Figs. 15. and 16 are similar views of the glue-foot. Figs. 17 and 18 are similar views of the creasing members I for making transverse creases across the flaps. Fig. 19 is a detail side elevation, upon an en lar ed scale, of the rolls for folding the fla s and turning them down u on the end of the blank. Fig. 20 is a detai plan view of the complete bag. Fig. 21 is a detail perspective view of the cylinder with the moving surface to contact the bag-blank after it has left the printing-rolls. Fig. '22 is a detail sectional view of the moving of the cylinder. Figs. 23 and 24 are detail side and end elevation of the rolls for fiuting the open end of the blanks. Fi s. 25 to 27 are detail views of the'box provided with means for moistening'a blank.

A general description first will be given. and then a detail of the operative parts.

Referring to Fig. 1, the paper 1s le from the roll A, over rollers a and a, past otors B and B", both of whichare supplied with splines for fraying the surface of the paper. From roller 0. the paper passes through the box C, wherein the paper'is moistened by steam. Thence the paper passes between rollers D D, where one edge is supplied with glue from the vat D notches a at intervals in the paper. Shoes F and F fold the paper preparatory to its passing under the rolls G and G, which form it into the tube. Thence the tube passes, through the knives H and H., which put the transverse slits a in the tube, almost severing it. From the knives the tubepassesbetween the fluting-rolls J, which flute the end of the blank, which form the open end of the bag when completed. The blank is severed by the fluting-rolls and is grasped by the swinging arm K, which carries it to the impression-cylinder L. It goes past the print- The knifeE puts ing-rolls M, of which there are four shown, so

that the bag may receive four different colors. The blank passes-thence past the cylinder P,

the surface of which is supplied with a changing surface of cord to prevent accumulation of ink. Cylinder R has knives which put the longitudinal slits a. in the blank, and the sta- I between the belts U and U The bladesV and V put the transverse creases a, as seen in Fig. 3, in the blank and the swinging blade W folds over the longitudinal flap 0, before the blank reaches the rolls Y Y, which fold the longitudinal flap a and complete the bag.

A detailed description of the parts will now be given. In order that the papermay be held in proper tension, it is necessary to use some means of equalizing the decreasing strength of the pull upon the roll A due to the ever-decreasing size of the roll as the paper is unwound therefrom. This consists of the following mechanism: On a shaft a", upon which the roll of paper A is wound, is mounteda wheel a, (shown in Fig. 4,) against which a brake-shoe a, bears with a force which decreases the pressure of the shoe a as the roll gets smaller. This is effected by means of the coil-spring a, which is compressed by the sleeve a, which is forced.

along the stem a of the shoe by the rotation of the screw-threaded shaft 0. This rotation is communicated to the shaft (1 from the shaft a by means of the cam a), mounted upon the end of the shaft a", rod a", lever a, pawl and ratchet a. and a worm-wheel 0. and gear-wheels a and a, as shown in.

Figs. 1, 4, and 5. It is seen that the rotation of the shaft a serves to carry the sleeve e away from the coil-spring a) and to decrease the pressure of the shoe 0, against the wheel 03, so that as the roll A decreases in diameter and the leverage of-the force exerted to unwind the paper is decreased the pressure of the shoe is decreased.

The motors B and B maybe electric and are to be given a rapid rotation and to have splines to bear lightly against. the paper, so as to remove the glaze from the surface thereof to facilitate its taking u the glue.

The steam-box is illustrated in detail .in Figs. 25 and 26. has longitudinal ways a and 0 upon each'side, which protect the edges of the paper from the action of the steam, while pass upon each side thereof through perforation 0 Steam is to be admitted to the box throughthe perforation 0 upon its side.

The glue-rolls D and D and vat D areof ordinary construction and not, therefore, to be described specifically. The shoesF and F are placed. upon the shaft f at a distance lated by means of the arms f Y The knives of cylinder H are illustrated in Figs. 7 and 8. I Cylinder H has a rubber longitudinal flap (i down over the It will be seen that the box permitting it to strip h inserted in its edge, and cylinder H has two severing-blades h and k which stand at a distance apart e ual to the width of the notches a so that w en the blades h contact the rubber h they sever a blank from the tube, with the exception of a small strip of width equal to a distance between the knives h and k which strip serves to draw the next blank through the rolls H and H until it is grasped by the fingers of the swinging arm K.

The cylinders J for fiutin the open end of the bag areillustrated in Figs 23 and 24. The lower of these cylinders is mounted in its bearings 7' so as to be capable of receiving a vertical movement to bring it against the other cylinder J. This vertical movement is imparted by cams 9" upon the ends of a shaft 1. The cams are made of a shape such that the lower cylinder J is raised at intervals such that it contacts only the rear end of each blank as it-passes along. The surfaces of the rolls J J are fluted, so that flutes are thrown the open end of the blank.

Theswinging arms K are illustrated in detail in Figs. 9 and 10. They are journaled at their lower ends upon a shaft 7c. Intermittent reciprocation may be imparted to them by any suitable mechanism. Arms K carry at their upper ends fingers k, which have. longitudinal slots M, which pass over the studs 7: projectin outward from the arms K. The fingerscarry springs 7r, which bear against studs Ze and have a tendency to hold the-finger 7c in a. osition such that its upper end k contacts t e u per part of the arm K. U on each side 0 arms K are brackets is, w ose up er surface form cams k at the outer end 0 the swing of the arm K, which cams 70 contact the lower end of the fingers k and raise the fingers so that their upper. ends k are carried out of contact with the arms K, so that upon the left-hand limit of the swing of .the arm the blank may be ermitted to enter between thearmK and the finger. Ye and at the righthand end of the swing of the arm the blank may be released as soon as it is grasped by the fingerv l of the-impression-cyhnder. 'lmpressiomcylinderL, is illustrated in detail in Fi s.,11 and 12. It has passing over it two be ts 1, each passing likewise over a roller. 1 Cylinder- L has erforations 1n lts surface. through which gers l pro ect. These-fingers l are mounted upon transverse shaftsl which are journaled upon themterior. of. the cylinder. L and have studs Z into whose path project. fixed pins to move the fingers to allow them; to grasp the blank as it is fed to thembythe swinging arm-K. The printing-rolls M, as seen, are-situated. so as to. print theblank before-the folding opera.- tion takes place, As the-blank leaves the printing-rolls M its printedsurface is resented to the surface of the cylinder P, w iich ically changing the. surface so that the ink I may not be smeared thereby.

. 1" the cord, preferabil series of The construction of the cylinder P is illustrated in Figs. 21 and 22. Within. the cylinder P are twospools cotton, is wound. e spool p throu h a erforations p in the surface the cylinder Pin a zigzag course to the spool p. 'At the edges of the perforations p are mounted rollers 19 and p to reduce friction. Spools p aremoun'ted upon ashaft 1 It" carries the ratchet 1), arm 1), and pawl The arm 1) is struck by a stationary stud, which is projected into its path in a manner similar to that in which the studs 1 project inthe path of the fingers Z This causes the spool ,p to be given an intermitted rotation to draw the cord over the spool to the spool 10, and thus to change the su aceof the cylinder P which is presented to the printed blank. Then the blank is fed forward by the cylinder R, which is illustrated in Figs. 13 and 14. Cylinder R has two cutting- The cord passes from t blades 1'' and transverse creasing-blades r ,and two pinsm The blades 1' cut the longitudinal slits a in the blank. The creasingblader makes the creased, as shown in Fig.

3, and the pins r pierce the end flap c of the blank near its forward end, as illustrated in Fi .3, hold it down, while the flap a is finger p", which grasps the projection A,

16 in detail.

I mounted in cylinder L. This fin er 4 raise to open the end of the blank by the formed upon the blank by the notch a. Finger p is mounted upon cylinder P and is opened by studs placedinits path in a manner similar to that in which fingers are 9 carries-the blank forward between t e belts U and U, and flap a "is released from the pin r by a strippers, mounted with the blade 8 upon thestationary bracket S. Blade s contacts fla cto prevent its flying up when released om pin 1' The glue-foot T and its vatare of ordinary construction and may be seen in Figs. 15 and As the blank asses betweenthe cylinder P and the .cylin er u onv which the blades V and V are mounte the blades makethe creases a across the blank, which gives the flapa and a a tendency to stand u some- U' and U the flap a is turned over:in advance of the flap a by the reciprocating blade W, 'whichis secured upon' a rod w,

t which fits into slot to in'frames W. Blade w is pivoted at 'w to a reciprocating arm w pivoted at its lower end to standard 10. Motion is given arm'w by a link/L0 which is pivoted to a crank w. As the wheelP revoives it is seen that a long reciprocating motion is imparted to the 'arm w which causes the rod w to reciprocate in the slot w and two 1). Upon and that this causes the blade W first to take under the flaps 0, and to turn the same over prior to the time at whichthexrolls Y Y .iurnthe flap a, down to form the completed.

a o o TVhat I claim is- 7 7 1. :In a aper-ba machine the combination of the feed-roll or the paper, devices ad j'acent to'the feed-roll for fraying the surface of the paper to repare it for receiving paste, pasters, and f0 ding devices for forming the paper into a tube. v

2. In a paper-bag machine for forming bags froma paper 'tube, the combination of, the feed-roll the tube-folding devices, the gluing a paratus between the folding devices an the feed-roll and a pa er-moistenirig device located between the eed-roll and the gluing apparatus and consisting of .a. chamber with ways for keeping the edges of the paper dry.

3. 'In a paper-bag machine of the characterdescribed the combination of the feed-roll the tub e-folders, a rotating knife between the feed-roll and said folders forcentrally notchthe aper,'means located adjacent to the in foPders or severing the blank from the tube a swin ing arm with fingers for engaging the blank efore it is severed and for carrying it forward'toward the bottomfolders.

4. In a paper-bag machine a tube-forming- .mechanism, meansfor severing blanks from the tube, bottom-folders and a swinging vmechanism for carrying the blank forward folders consisting of a swinging arm for receiving the blank fromthe severing-knife, a rotating wheel with fingers u on its circumference, means for holding t e fingers normally closed and stationary studs located in r the path of the fingers to open them to receive the blanks from the swinging arm.

6; Ina paper-bag machine the combination of a tube-former, a severing means for cutting blanks from the tube, a conveyingvcylinder for receivingsthe blanks, a series of printing-rolls contacting the conveying-cylinder, and bottom formers adjacent to the conveying-cylinder.

- 7. In apaper-bag; machine the combina' tion of a wheel for conveying blanks cut from a paper tube to the bottom-folders, means for holdingthe blank upon the wheel, and printing rolls contacting the conveyinga' wheel, anda wheel with automatically-changmg drying-surface located adjacent tothe printing-rolls.

IIO

8. Ina paper-bag machine the oombina- 1 o IZO tion of means for printing the surfaces of the blank,'a drying-cylinder located adjacent to a the printing apparatus, and having journaled within it spools for holding cord, and the cord zigzagged through the surface of the cylinder for rotating the spools and winding the-cord from one to the other spool.

9. In a paper-bag machine folders for laying-the diamond folds .in-the blank consisting of a rotating cylinder'having two longitudinal blades and pins between the blades, the

blades for cutting longitudinal slits in the blank and the pins for catching the part of the blank which forms the rear flap, a conveyingcylinder with a finger for graspingthe front flap and a stripper for disengaging the pin from the rear p.

,10. In a paper-ba machine the combination of the folders for laying the diamond folds in the blank, belts for carrying the blank forward, creasing-blades for making transverse creases across the blank,

a reciprocat ing blade for taking under the rear flap of the blank and turning it down in advance of the folding of the front flap, a means for reciprocating the blade and means for turning down the front flap over the rear one.

11-. 'In a paper-bag machine the combination of folders for laying the-diamond folds in the blank, belts for engaging the sides of the blanks and carrying them forward, side frames adjacent to the belt having curved slots invthem, a rod mounted to slide in the slots, a blade secured to the rod a reciprocating arm pivoted to the blade whereby the recating arm for engaging the blanks and carrying them forward toward the bottom-folders. l

13. In a paper-bag machine the combination of a feed-roll for the paper, guide-rolls adjacent to the feed-roll over which the aper passes toward the paster, rotating sha ts lo' cated upon opposite sides of the pa er adja= cent to the guide-rolls and su pied with splines for fraying the edges 0 the paper upon opposite sides, pasters and folding devices for forming the paper into a tube.

GEORGE HARTMAN. Witnesses: v

WALTER F. MURRAY, EDWARD WENNING. 

